Best Semantic Layer Tools in China - Page 2

Apache Ossie is an open specification and converter toolkit for exchanging semantic metadata across analytics, business intelligence, and AI systems. Its YAML-based format describes semantic models, datasets, fields, metrics, dimensions, relationships, and SQL expressions in a portable structure. Data and analytics engineers can use compatible implementations to author, translate, and reuse these definitions across connected platforms, supporting consistent business context for reporting and AI-assisted analysis. The project is an open-source community effort under the Apache License 2.0, with available conversions depending on each platform’s implementation.

Dremio delivers lightning-fast queries and a self-service semantic layer directly on your data lake storage. No moving data to proprietary data warehouses, no cubes, no aggregation tables or extracts. Just flexibility and control for data architects, and self-service for data consumers. Dremio technologies like Data Reflections, Columnar Cloud Cache (C3) and Predictive Pipelining work alongside Apache Arrow to make queries on your data lake storage very, very fast. An abstraction layer enables IT to apply security and business meaning, while enabling analysts and data scientists to explore data and derive new virtual datasets. Dremio’s semantic layer is an integrated, searchable catalog that indexes all of your metadata, so business users can easily make sense of your data. Virtual datasets and spaces make up the semantic layer, and are all indexed and searchable.

Nowl is a semantic access layer that makes existing enterprise software and databases queryable for AI in business terms. Instead of giving an AI free SQL access, Nowl translates business questions into validated, read-only query plans and shows how every answer was derived, so results are traceable instead of a black box. A privacy layer filters data before anything is transmitted to a language model. Nowl is self-hosted (except the language model), EU data residency can be selected, and it changes nothing in the existing systems. It connects to assistants such as Claude via MCP. Typical uses: ad-hoc questions from sales, finance, service and management that standard reports do not cover. Built for mid-sized companies with grown software landscapes. Currently in a pilot program.